利用工业磷酸一铵滤渣制备含聚磷酸铵的二元肥料  

Preparation of binary fertilizer containing APP from industrial MAP filter residue

作　　者：周飞 ZHOU Fei(Hubei Xiangyun Group Chemical Co.,Ltd.,Wuxue 435400,China)

机构地区：[1]湖北祥云集团化工股份有限公司,湖北武穴435400

出　　处：《生态产业科学与磷氟工程》2025年第3期51-55,共5页Eco-industry Science & Phosphorus Fluorine Engineering

摘　　要：为了更好地利用工业磷酸一铵滤渣,实现资源回收利用与产品附加值提升,提出一种利用工业磷酸一铵滤渣制备含聚磷酸铵的二元肥料的方法。先用浓硫酸酸解工业磷酸一铵滤渣,再用尿素中和酸解液,最后高温干燥聚合,生产含聚磷酸铵的二元复合肥,并初步探索了较优的工艺条件。在95℃加热搅拌下,用浓硫酸(用量为工业磷酸一铵滤渣干基质量的60%)酸解1 h,再用尿素(用量为工业磷酸一铵滤渣干基质量的18%)中和1 h,最后于180℃干燥聚合1 h,制备的成品中水溶性磷、有效磷质量分数分别为20.19%、29.36%,w(N)为10.46%,聚合率68%,可作为w(MgO_(水溶))2.83%的10-29-0 APP-Mg肥。In order to better utilize of industrial MAP filter residue,achieve resource recycling and increase product added value,a method for preparing binary fertilizers containing APP from industrial MAP filter residue is proposed.Firstly,the industrial MAP filter residue is acidified with concentrated sulfuric acid,then neutralized with urea,and finally dried and polymerized at high temperature to produce binary compound fertilizer containing APP.The optimal process conditions are preliminary explored.Under stirring at 95 C,then acidified for 1 hour with the dosage of concentrated sulfuric acid is 60% of the drying basis of industrial MAP filter residue,then neutralized for 1 hour with the dosage of urea is 18% of the drying basis of industrial MAP filter residue,and finally dried and polymerized at 180℃ for 1 hour,the mass fractions of water-soluble phosphorus and effective phosphorus in the prepared product are 20.19% and 29.36%,respectively,w(N)is 10.46%,the polymerization rate is 68%,which can be used as a 10-29-0 APP-Mg fertilizer with water-soluble MgO content of 2.83%.

关 键 词：工业磷酸一铵滤渣 酸解 中和 聚合 含聚磷酸铵二元肥料 

分 类 号：TQ44[化学工程—化学肥料工业]